Adjustable LDO. NCV47721 Datasheet

NCV47721 LDO. Datasheet pdf. Equivalent

Part NCV47721
Description 3.3V to 20V Adjustable LDO
Feature NCV47721 3.3 V to 20 V Adjustable LDO with Adjustable Current Limit and Diagnostic Features The NC.
Manufacture ON Semiconductor
Datasheet
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NCV47721 3.3 V to 20 V Adjustable LDO with Adjustable Curre NCV47721 Datasheet
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NCV47721
NCV47721
3.3 V to 20 V Adjustable LDO
with Adjustable Current Limit
and Diagnostic Features
The NCV47721 LDO regulator with 200 mA output current is
designed for use in harsh automotive environments. The device has a
high peak input voltage tolerance and reverse input voltage, reverse
bias, overcurrent and overtemperature protections. The integrated
current sense feature (adjustable by resistor connected to CSO pin)
provides diagnosis and system protection functionality. The CSO pin
output current creates voltage drop across CSO resistor which is
proportional to output current. Extended diagnostic features in OFF
state are also available and controlled by dedicated input and output
pins.
Features
Adjustable Output: 3.3 V to 20 V ±3% Output Voltage
Output Current: up to 200 mA
Enable Input (3.3 V Logic Compatible)
Adjustable Current Limit: up to 300 mA
Protection Features:
Current Limitation
Thermal Shutdown
Reverse Input Voltage and Reverse Bias Voltage
Diagnostic Features:
Short To Battery (STB) and Open Load (OL) in OFF State
Internal Components for OFF State Diagnostics
Open Collector Flag Output
AEC−Q100 Grade 1 Qualified and PPAP Capable
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
www.onsemi.com
14
1
TSSOP−14
Exposed Pad
CASE 948AW
MARKING
DIAGRAM
14
NCV4
7721
ALYWG
G
1
47721
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
Typical Applications
Audio and Infotainment System
Active Safety System
Cin
1 µF
Diagnostic Enable Input
Vin Vout
ADJ
EN CSO
NCV47721
CCSO
1 µF
DE
GND
EF
R1
To A /D
R CSO
R2
Cb*
C out
10 mF
Error Flag Output (Open Collector)
Cb * - is optional for stability with ceramic output capacitor
Figure 1. Application Schematic
© Semiconductor Components Industries, LLC, 2015
April, 2017 − Rev. 1
1
Publication Order Number:
NCV47721/D



NCV47721
NCV47721
IPU 10 mA
IPU_ON
Vin
ICSO = Iout / 100
RPD_EN
VOLTAGE
REFERENCE
VREF1
VREF2
VREF_OFF
PASS DEVICE
AND
780k
EN
ENABLE
EN
CURRENT MIRROR
+ VREF2
2.55 V
SATURATION
PROTECTION
THERMAL
SHUTDOWN
PD_ON
OC_ON
+
0.95x
VREF2
Vout
CSO
RPD1
500k
STB_OL_OFF
+
RPD2
100k
EN IPU_ON
VREF_OFF
1.05 V
DE
RPD_DE
780k
PD_ON
STB_OL_OFF
DIAGNOSTIC
CONTROL
LOGIC
OC_ON
+
EA
VREF1
1.265 V
ADJ
EF
GND
Figure 2. Simplified Block Diagram
www.onsemi.com
2





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